monochromaticity
UK /ˌmɒnə(ʊ)kɹɒməˈtɪsɪti/US /ˌmɑnoʊkɹɑməˈtɪsɪti/
noun1
- The achievable frequency stability is proportional to the monochromaticity (or Q) of the absorption, so optical clocks promise better standards. — 2001
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